Bildernachweis

Die verwendeten Bilder stammen aus folgenden Quellen:
Bilder der jeweiligen Hersteller/Dienstleister, Produktfotos durch eigene Fotografie, fotolia.com

Fotolia: 84679894 - Sun Glasses © huseyinyildirim
Fotolia: 48752436 - occhiali © spinetta
Fotolia: 31167054 - Glas schleifen © Inga F
Fotolia: 93608372 - Colored contact lenses, the concept of design vision © kichigin19 
Fotolia: 75322324 - calibrating the phoropter © click_and_photo
Fotolia: 83590415 - Young woman with contact lens © Sergey Ryzhov
Fotolia: 84682589 - Happy couple with specs
Fotolia: 83590415 - Young woman with contact lens © Sergey Ryzhov  
Fotolia: 94008266 - Eye © alozar 
Fotolia: 93539873 - Handsome man with eyeglasses sitting in front of desktop  © goodluz
Fotolia: 84334151 - Happy fashionable couple on sunny vacation day © konradbak
Fotolia: 71083543 - Business Mann © Cello Armstrong 
Fotolia: 329115265 -Corona Virus banner illustration - Microbiology And Virology Concept © Mike Fouque